Gaya APA

Shellly, G, B. (1992). Complete computer concepts and microcomputer applications : Wordperfect 5.1 lotus 1-2-3 release 2.2 dBase IV Version 1.1 . Massachusetts: Newbury H.

Gaya MLA

Shellly, Gary, B.. "Complete computer concepts and microcomputer applications : Wordperfect 5.1 lotus 1-2-3 release 2.2 dBase IV Version 1.1". Massachusetts: Newbury H, 1992. Text.